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Finding the Fourth Proportional to 8,974.84, 12,385.12 and 4,995.96

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Solution

The fourth proportional to 8,974.84, 12,385.12 and 4,995.96 is: 6,894.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,974.84 : 12,385.12 = 4,995.96 : x
  2. Step 2: Convert to fraction form
    8,974.84/12,385.12 = 4,995.96/x
  3. Step 3: Cross multiply
    8,974.84x = 12,385.12 × 4,995.96
  4. Step 4: Simplify right side
    8,974.84x = 61,875,564.12
  5. Step 5: Solve for x
    x = 61,875,564.12/8,974.84
  6. Step 6: Final answer
    x = 6,894.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.